Battery operated toy adapted to simulate a dental drill



Dec. 5, 1961 E. GOLDFARB BATTERY OPERATED TOY ADAPTED TO SIMULATE A DENTAL DRILL Filed July 22, 1959 INVENTOR. /al

One end portion 25 of strip 31 is bent to afford a contact with the positive pole of the dry cell. The other end United States Patent O "cc Patented Dec. 5, 1961 1 z of the strip 31 is bent to form an offset arm 32 overlying 3,011,287 the rivet 27. A button 33 passing through an aperture in BATTERY OPERATED TOY ADAP TED To the wall of the housing is operatively engaged against the fi g i arm 32. Under normal inoperative conditions the arm p N 0 at l e 32 is spaced from and out of contact with the rivet 27.

orth Hollywood, Calif. Filed July 22, 1959 Sen 828,845 When the button 33 is depressed and contact between Clainm (CL 6 39 arm 32 and rivet 27 is established current will flow from the positive pole of the battery through conductor 31,

This invention relates to a battery operated toy adapted arm 32, rivet 27, armature 22, contact 28, conductor 29, to simulate a dental drill. 10 the coil winding of the magnet 16, conductors 14 and 12 One of the objects of this invention is to provide a and finally to the negative pole of the dry cell 9. The battery operated toy or novelty which presents the illuelectromagnet 16 is thereby energized and draws the arion that same is a dental drill and produces a sound mature 22 downwardly breaking contact with contact 28. simulating that of a dental drill in operation. This results in a break in the circuit and deenergization Another object of this invention is to provide a toy of the electromagnet 16 which causes release of the which may be used by a child to pretend that he is simuarmature 22 which thereupon reestablishes contact with lating adentist in drilling a tooth. contact 28 and reenergization of the electromagnet.

Another object of this invention is to provide means for This cycle is repeated so long as the button 33 is devarying the frequency and intensity of the sound thereby pressed producing a high pitched buzzing sound simulatcreating the illusion of actual drilling. ing that of a dental drill.

Other objects will become apparent as this description The frequency and intensity of the sound may be progresses. varied depending on the pressure applied to button 33.

In the drawings: When the pressure on button 33 is changed, the distance FIGURE 1 is a side elevational view of the simulated between armature 22 and the electromagnet 16 is also dental drill with a portion thereof in section. changed, therefore varying the frequency of the sound.

FIGURE 2 is a top plan view. This is due to the fact that the buzzer is supported on strip FIGURE 3 is a longitudinal cross-sectional view show- 17 which is mounted by an eyelet as at 18, with the rest ing particularly the sound producing means. of strip 17 floating and acting as a pivot point so that FIGURE 4 is an enlarged view of the contact switch, any pressure on button 33 will not only make electrical and contact but -will push the mechanism, pivoted at 18 FIGURE 5 is a schematic view of the circuit. down, thus changing the distance between the armature The shape of the device is best shown in FIGURES 1 and the electromagnet. and 2, and comprises a housing generally indicated at 1 It will be understood that various changes and modipreferably molded in its entirety of plastic material. fications may be made from the foregoing without de The housing includes a centrally positioned rectangular parting from the spirit and scope of the appended claims. shaped chamber generally indicated at 2, a forwardly ex- I claim: tending neck 3 which inclines upwardly and which has 1. A toy simulating a dental drill comprising a housing a simulated dental bit 4 and drill 5 formed thereon. Exand a neck extending forwardly thereof, a simulated tending rearwardly from the chamber 2 is a bullet shaped dental bit secured to the front end of said neck, a dcchamber generally indicated at 6 which supports a small pressible member secured to the top of said housing, a dry cell battery. The sound producing means, presently supporting member having a lower and an upper portion, to be described, is contained in the central chamber 2 means for securing one end only of the lower portion which is closed by a removable side cover 7 secured by of the supporting member to the bottom of said housing any conventional means. The drill 5 does not rotate but inside said housing with the balance of said supporting is merely intended to simulate the conventional structure. member spaced from the bottom of said housing, an elec- A conventional dry cell battery 9 is housed within the tromagnet mounted on said lower portion, an armature chamber 6. Extending longitudinally of the chamber 6 mounted on said upper portion to extend over the top is a metal strip 12, the terminal portion 13 of which is of said electromagnet, a battery supported in said housarranged to contact the bottom of the dry cell battery 9 ing and in electrical circuit with said electromagnet, said constituting the negative terminal of the same. A condepressible member when depressed closing the electrical ductor wire 14 is connected to the strip 12 and to the coil circuit to operate said electromagnet and armature to prowinding of electromagnet 16. Said electromagnet is duce a buzzing sound simulating that of a dental drill in supported on a metal strip 17 which is riveted by an eyelet operation, said depressible member depressing said supas at 18 to the wall of the housing of chamber 2, the porting member at the end opposite where said electroelectromagnet 16 being insulated from the strip 17 by an magnet is mounted to change the distance between the insulating washer 19. electro-magnet and the armature.

The strip 17 angles upwardly and is bent vertically and 2, A toy d scribed i claim 1 in which the frequency then horizontally as shown in FIGURE 3. Riveted t0 the and intensity of the sound is varied by varying the preshorizontal arm 21 in stacked relationship is a resilient sure on the depressible member. armature 22 having one end overhanging the 615cm) 3. A toy simulating a dental drill comprising a housing magnet 16, an insulating Washer a flat bar member 24 and a neck extending forwardly thereof, a simulated denand an insulating Washer The rivet 27 afiofds an tal bit secured to the front end of said neck, a manually electrical connection with the arm 21 and armature 22. d ibl member e u ed t th top of said housing, a The bar member 24 is insulated from rivet 27 and is supporting t i secured only t o end t th b ttom of Provided at thfi face end with a Contact elfimtsnt 23 t0 the said housing inside said housing with the balance of whi h iS s l a ConduCtOT Wire 29 leading from the said strip spaced from the bottom of the housing and with pp end of the Coil winding of the electromagnet the opposite end of the strip extending upwardly thereof A conductor strip 31 is riveted to the inner wall of the in ide aid housing, an electromagnet mounted on said housing of chamber 2 and extends longitudinally thereof. Strip adjacent the bottom end thereof, an armature mounted on said strip adjacent the opposite end of said strip so that the armature extends over the electromagnet,

a battery supported in said housing rearwardiy of said electro-magnet and in electrical circuit with said electromagnet, said depressible member when depressed closing the electrical circuit to operate said electromagnet'and armature to produce a buzzing sound simulating that of a dental drill in operation, said depressible member being depressible to varying degrees to cause said supporting strip to give and move downwardly towards the bottom of the housing to change the distance between the elec- 7 tromagnet and the armature to vary the frequcncyof'the sound.

References Cited in the file of this patent UNITED STATES PATENTS 

